Welcome to HCM.
Those drugs you are taking has a side effect of
dry mouth and dry nose so it is not a curetive treatment.
Cause of
excessive salivation are Neurological disease,Oral infection,Oral inflamation,Certain drug induce,Anatomical abnomality.
First you try to find out the cause of ex.salivation for this you can
consult ENT specialist.
Avoid any
stress if you have.Eat healthy food,think positve,do pranayam regularly.
Best wishes for recovery.